# flushSync

**Kind:** Function

**Source:** [`src/jsx/dom/render.ts`](https://github.com/honojs/hono/blob/main/src/jsx/dom/render.ts#L801)

**Part of:** [Jsx](subsystem-src-jsx)

## Signature

```ts
function flushSync(callback: () => void): void
```

## Parameters

| Name | Type |
|---|---|
| `callback` | `() => void` |

**Returns:** `void`